body {
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
}

h1 {
text-align: center;
margin-top: 20px;
}

table {
border-collapse: collapse;
width: 80%;
margin: 0 auto;
}

th, td {
text-align: center;
padding: 10px;
border: 1px solid #ddd;
}

th {
background-color: #4CAF50;
color: white;
}

tr:nth-child(even) {
background-color: #f2f2f2;
}

td:last-child {
text-align: center;
}

td:last-child button {
margin: 0 5px;
padding: 5px 10px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}

td:last-child button.delete {
background-color: #dc3545;
}

td:last-child button.edit {
background-color: #007bff;
}

.add {
display: block;
margin: 20px auto 0;
padding: 10px 20px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}